Type-writing machine.



J. H. JACKSON. TYPE WRITING MACHINE.

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J. H. JACKSON.

TYPE WRITING MACHINE.

\ APPLIOATION FILED APR. 24, 1907. RBNBWED APB. 1, 190s.

900,931 Patented Oct. 13, 1908.

2 SHEETS-SHEET 2.

v JOSEPH H. JACKSON, OF HAMILTON, ONTARIO, CANADA.

TYPE-WRITING MACHINE.

` Application led April 24,

My invention relates to improvements in 1o `type writing machines, in which a stationary ame having a type arm nected thereto and adap tally and to redetermmed position to and in relation to t `e platen, by the depression of a key, and byUsaid de ression, to adjust the type arm, to locate t e same to one defined writing position and common centerand to retain the same in said position for writing purposes, and to provide me'ans to allow a certain spring tension to the type arm carrier hence to the 'type arms while writing.

The objects of my invention are, first, in a type-writing machine, to provide a type-arm carrier adapted to horizontal movement, second, to provide means to allow adjustable and semiautomatic spring tension to said' carrier, third, `to bring the type arms to delined position and one common center, fourth, to provide means for adjusting and locating the type holder, and retaining the same in writing position, by the depression of a key; fifth, to provide` means to eliectually overcomethe constant noise of a typewriting machine, thereby producing a com.J parative noiseless machine. I attain these objects by the mechanism illustrated in the accompanying drawing, in which j Figure 1 is asectional side elevationof a type-writing machine, at rest, showinglthe features of my invention. Fig. 2 is a'plan of the same. Fig. 3 isan` enlarged plan showing very fully important mechanism comprised in my invention, Fig. 4 is a sectional side elevation of Fig. 3 of the drawing showing adjustable mechanism connected to a depression key and to the typewriting mechanism for semiautomatically operating the same. Fig. 5 is an enlarged detail plan of a part of the mechanism for locating and retaining the type holder, showing very fully the cam mechanism of the same, adjustably placed on the forward part of the movable type-arm carrier, apart only of 'which is shown. Fig, 6 is an enlarged detail sectional side elevation of the forward end part of the carrier loosely conted to move horlzon- Specification of Letters Patent.

1907, Serial No. 369,915. Renewed 'April 1, 1908. Serial No. 424,540.

Patented Oct. 13, 1908.

I movable type arm carrier and the adjustable cam and section ofa cam holder transverse arm, on said carrier, and secured to said cam. Fig. 7 is a plan of Fig. 6 of the drawing. Fig. 8 is anenlarged detail side elevation of the inner edge of one of the side levers or type locating and locking arms, showing the beveled jaw wherewith said levers grip and. locate* the ty crumed to tige under art of the ends of the transverse plate Whic is secured on the forward end part of the type arm carrier. Fig. 9 is an enlarged detail side elevation of a type arm, showing the type holder having ty e, and a centrally located beveled recess or slot to conform with the beveled jawsiof the side grip levers which are ada ted to grip and temporarily hold the type older.

Slmilar' letters throughout the several views.

In the drawing the stationary and rigid framework of the machine is indicated by A, and B is the transverse platen or typeimpression roller journaled on the carnage .C which is adapted to slide on the transverse stationary bars D of the frame.

E is the horizontal type arm carrier which is supported by two side arms and a centrally located arm which are indicated by F. The upper ends of the arms F are pivotally connected to the movable carrier E, and the lower ends of said arms are pivotally connected to the frame A, and at convenient laces. The ends of the type arms Hare oosely connected to a steel ulcrum Wire rod the segmental sha e of the inner segment line of the-carrier. he o posite ends of the type-arms H, are provi ed with type-holders K, sup lied with type 2, and the holder K, has a Feveled groove 3, similar to the one shown in Fig. 9 ofthe drawing, and its purpose hereinafter mentioned.

The movable type arm carrler E has a forward central extension, which may be termed a bracket 5, and on the outer end art of the bracket is a transverse plate' 7, an underneathsaid plate and on vthe top of the bracket is a small thickness of material or washer 6 to raise the underside of said plate higher than the top of the bracket. The plate 7 to ether with the washer 6 are secured to t e bracket 5 by means of the central screw 8. The plate 7 is raised above the bracket 5, to allow the bent grip-locating e holder, and which are ful-- J, secured in the carrier E, and which follows refer to similar parts,

arms 9 to be flush, that is, on the same plane, with the cam 10. The ends of the bent grip levers 9 converge toward each other and are fulcrumed at 15, to the underside of the end partsof the plate 7, andthe arms 9 are adapted to adjustment to the carrier E by means of the screw 8.

The cam 10 isl secured to the central part of the transverse arm 12 at 16. The cam 10 together with the arm 12 allow the bracket 5, of the carrier E, `to slide underneath the same. The cam 10 has a horizontal slot 13 `which allows the screw 14, to slide therein,

the screw 14 is rigid to the bracket 5 and moves with the bracket and the carrier E, and therebyT retains the cam in pro er relation with the carrier. Therear en s of the arms 9 are rounded, or suitably shaped, to engage with the partial beveled sides of the cam, the shape, or form, of which is in evidence in Fig. 7 of the drawing. The forward ends of the arms 9, and on their inner edges, or sides, have beveled recesses 4, to conform With the beveled grooves 3 in the type holder K, in order that the arms 9 may grip and temporarily hold the type-holders K, when the same are brought to locating position.

. being It will be noticed that the beveled shape of said recess 4 in the arms 9, and the said beveled groove in the holder K, as shown in Figs. 8, and 9 of the drawing, when the holder K is brought t'o position, or nearly so, by mechanism hereinafter described, the arms 9 always on the' same plane will adjust and ocate the holders K to one defined center and to one defined andtpredetermined yertical point, or position.

M is a tension spring, the ends of which are secured to convenient places on the rear parts of the arms 9 to bring said rear parts always in contact with the edges of the cam 10, in order that the op ositeends of the arms may always be su ciently (open, or

apart, to receive the holders K.

The rigid u per part A, of the frame as shown very c early in Figs. 2 and 3 of the drawings, have certain raised hubs, or bosses N, through which the ends of the rods O,

.pass througlti and said rods are secured to said hubs by means of set screws, or knurls P, which allow said rods O to be adjusted to definite position. The op osite ends of the rods 0, are suitably and rmly connected to the end parts of the arm 12, the rods O hold the arm-12, together with the cam 10 in adjusted rigid position with and to the stationary frame A.

R are lugs on thev movableI carrier E, 'and T are similar lu s on the stationary frame A, and the links and U are pivotally connected together by the central pin 18, and the opposite ends of said links V and U are respectively pivotally connected to said lugs. W, 1s a link, or rod, also pivotally connected. to the pin 18, and the opposite and lower end of the rod W, is pivotally connected to the upper end of the bell crank Y. The said lower end of the rod W has a slot 19, and the screw 2() which passes through said slot operates therein and thereby allows the same to 7 be adjusted in order to give the carrier E more or less movement as is deemed necessary.

The bell crank Y, is loosely mounted on the universal transverse shaft, or rod 21, 7 which is journaled' in the frame A, and the lower end of the bell crank is loosely connected to the upper end of the vertical rod 22, the lower end of said rod is connected to the universal transverse bar 23. At the de- 8 pression of a key, or button 24 of the key oard, the bar 2,3 is brought dovmward together with the rod 22 and the lower end of the bell crank Y; also the rod W together with the connecting parts of the links V and S U, consequently the type-arm carrier.

S, is a tension pull spring connected to the bell crank Y, and the opposite end is con nected to the frame A.

33, are arms secured to the universal rod 9 21 previously referred to, and the upper end. of the vertical rod 34 is loosely connected to said arm, and .the lower end of said rod is loosely connected to the universal bar 23. At convenient laces on the rods 22 and 34 9 are similar soc 'ets 35 and 36 respectively, and are for the purpose of adjusting, that is lengthening or shortening said rods 22 and 34.

The arm 33 is secured to the universal rod 21, and the rod 34 is pivotally connected l to the arnr33, and the lower end of said rod is pivotally connected to the universal bar 23, therefore when the rod 34 is brought downward by any key, the rod 22 is also brought downward thereby moving the carrier E. l

The springs 25 exert more or less ressure on the ivotal center pin 32, there y very materia ly acting as an equalizer on the type arm carrier E and therefore to the anns 9 thence'to the type, thereby equalizing the 1 pressure of the type against the receiving surface B. The lugs on the carrier E may be adjustable to allow manifold writing. E, is pushed tol predetermined position toward the platen or `impression surface B. 1

zontal movement to the type-carrier when in 1 operative motion toward and from the receiving surface B.

The lower part of the spring or springs 25, extend on the upper part of the frame A., and

, a plate 27 covers said lower extensions of the l llt springs and ,is adapted to press on and secure t e springs to the frame A by means of a screw, or knurl 28, which is adapted together with the screws 29 to fasten said spring and plate 27 to the frame A. The plate 2-7 has a horizontal slot 30, forthe screw 28, and a slot 31 on each'side of the slot 3() to allow adjustment of the spring or springs 25 to suit the purposes of said springs. When the' late 27 10 1s adjusted to a forward position, the orward part of said plate exerts a greater pressure on the springs and when the plateis brought awa therefrom a contrary effect is thereby pro uced.

The movable carrier E is provided with an outer segmental or semi-circular steel fulcrum Wire Z, similar to the steel fulcrum wire J, to which `the type arms` H are loosely'connected. The u per end parts of the type arms H have ob ique extension links or arms 38.having oblong slots 39, and the segmental fulcrum wire Z has arms 40 mounted thereon which operate the type arms H by means of a pin or roller 43, extending from the arm and which slides in said slot when the rod 42 is brought downward. l

The lower end of the rod 42 is connected to a key 24, and the upper end of the rod is` loosely connected tov thelink or arm 40, as

shown in Fig. 4 of the drawing, or may be connected to the same arm at a point nearer to lts fulcrum center Z, as for instance at 41,

in order to allow more or less throw to the tylpe arm H, by the more or less depression of a ey. v

The o eration of the machine is as folloWs:- pon the depression of a key 24 of j the key board, the rod 42 brought down- Ward to ether with the arm and the eX- 40 tension ink 38 which forms a art of the type arm H and loosely journale on the segmental steel wire fulcrum J of the movable type arm carrier E. Consequent of above action the type arm at once responds to posi- 45 tion as shown in broken lines in Fig. 4 of the drawing, and( immediately the above function is performed, or nearly so, the said key of the key board engages with the lower universal bar 23, and the adjustable rod 22 is thereby brought downward, the bell-crank Y, fulcrumed on lthe universal bar 21, operated, the lever `W together with the links V and U are brought downward, the type-arm carrier E is pushed to defined position toward the receiving surface B. At this time the pivotal bent arms 9 move with the carrier E, and the rear parts of said arms contactwith the stationary cam 10, which widens said rear parts of the pivotal bent arms and thereby closes the forward ends of the arms upon the type-holder K, and retains the same temporarily in definite horizontal and vertical position until the type 2 has written, or printed. The tension s ring M on the rear parts of said arms k9 bring the rear parts of said arms always in contact with the cam 10. The springs 25 on the frame A are always in contact with the center pin 32 of the lugs T and the link U, and the slotted holes 26 in said lugs T, 7o forms an adjustable spring cushion for the links V and U, consequently to the type arm carrier E, together with the arms 9, and also to the type holder K and type 2, while Awriting. The spring cushion afforded to the type 2 while the same is performing its function is important, and contributes very materially, and in fact very forcibly'to the requirements of a noiseless or silent typewrit- A machine.

t will be obvious that on account of the beveled slot 3, of the type holder K, and the beveled recesses 4 in the fulcrumed grip arms 9, fitting and conforming to each other, the type holder will always enter and find deiinite location. Should the type-holder K, at any time fail to come slightly short of, or to pass slightly upward beyond its predetermined position, then by the beveled construction of the slot 3 of the type holder and the 90 beveled recess in the jaws of the fulcrumed arms 9 will naturally and automatically temporarily position the one with the other.

laims.

1. In a typewriting machine a stationar frame, a ,type arm carrier adapted to horizontal movement on the frame, a transverse plate adjustably connected to the carrier, bent lever arms converging towards each other and fulcrumed to the plate; a stationary cam adapted to adjustment on the frame, beveled recesses in the forward ends of the lever arms and opposite to each other, and the opposite ends of said arms adapted to engage said cam to bring the recessed ends of the arms toward each other.

2. In a typewriting machine, a stationary frame, a type arm carrier adapted to horizontal movement on the frame, lugs on the frame and on the carrier, link motion loosely `11o connected to the lugs, a fulcrum pin extending throu h and beyond said lugs on the frame, an adapted to horizontal movement said lugs, equalizing springs on the frame, and in contact with the pin, and adapted to horizontal adjustment on the frame.

3. In a typewriting machine, a stationary frame, a type arm carrier on the .frame and adapted to horizontal movementL a stationary cam on the frame, a transverse lever arm adjustably connected to the cam, rods extending from the ends of said lever to the frame and adj ustably connected thereto, and means in the cam to allow the movement of the carrier.

4. In a typewriting machine, a stationary frame, a type arm carrier adapted to horizontal movement on the frame, bent levers fulcrumed to the carrier, the ends of said levers converging toward each other, a stationary cam on the frame, a transverse arm adj ust'-A ably connected to the cam, rods extending from the end parts of the arm and adjustably connected to the frame, means in the cam to allow the movement of the carrier and to retain the cam in definite position with the carrier.

5. In a type writing machine, a stationary frame, a type arm carrier ada ted to horizontal movement on the frame, ent lever arms fulcrumed to the carrier, and converging toward each other, the forward inner parts of said arms, 'having beveled recesses opposite to each other, a cam adapted to adjustment on the frame, means in the cam to allow movement of the carrier, means on the carrier to operate in said means in the cam.

6, In a typewriting machine, a statinary frame, a type-arm carrier adapted to movement on the frame, bent lever arms fulcrumed to the carrier and converging toward each other, and having beveled recesses in the forward parts of the arms and opposite to each other, a cam having a slot on the frame, means to adjust the cam and means on the carrier to operate in said slot.

7. In a typewriting machine, a stationary frame, a type arm carrier adapted to horizontal movement on the frame, hnk motion connecting the frame and the carrier, a key board on the frame, adjustable means connected to said link motion and tothe frame lto propel the carrier upon the depression of a ey.

8. In a typewriting machine, a stationary frame, a type arm carrier adapted to horizontal movement on the frame, lever arms fulcrumed to the carrier and convergingv toward each other, beveled recesses in the forwarded c parts of said arms and opposite to each arms ulcrumed to the carrier, a type ho der l on the arms, a beveled slot in the holder to conform with said recess and enter the same.

9. In a typewriting machine, a stationary frame, a type arm carrier adapted to movement on the frame, bent lever arms fulcrumed to the carrier, beveled recesses in said arms and opposite to each other, means on the frame to contact with the opposite ends of the arms, a type arm having a type holder fulcrumed to the carrier, a beveled slot in the holder to conform to said recesses, means to bring the typeholder to position in said recesses and means to operate the arms and to temporarily locate and hold said type holder to printing position.

10. In a typewriting machine, a stationary frame, a movable type arm carrier. on the frame, bent lever arms having beveled recesses opposite to each other fulcrumed on the carrier, type arms fulcrumed to the carrier, type holders having beveled slots, on A the type arms, and adapted to fit into and between said recesses, to locate the type.

1 1. In a typewriting machine, a stationary frame, a movable type arm carrier on the frame, link arms connectng the frame and the carrier and adapted to move the carrier,

adjustable means on the frame to allow equalizing spring motion or resilient nature, to said links, thereby to said carrier, and consequently a silent impression of the type on a receiving surface.

12. In a typewriting machine, a universal rod, a bell crank loosely connected on the rod, arms secured to therod, adjustable rods secured to the arms and the lower ends of said rods pivotally connected to a lower universal bar, and the upper art of the bellcrank adjustably connectedP to a compound link motion.

JOSEPH H. JACKSON. Witnesses: l JOHN H. HENDRY,

ARTHUR E. WOLLNY. 

